Udacity lesson 6

Question 1

alter the most-recent commit

Answer 1

git commit –amend

Question 2

reverse a given commit

Answer 2

git revert number_of_the_commit

Question 3

delete a commit

Answer 3

git reset commits_number_or_relative_reference

Question 4

what does git commit –amend do?

Answer 4

lets you provide a new commit message, or

you could edit, stage and save files with changes that should logically belong to this commit and not to a commit of their own, and then use git commit –amend, and these changes will be added to that old commit

Question 5

I’ve forgotten to make some changes that belong to my last commit. what to do?

Answer 5

Question 6

what does git revert number_of_the_commit do?

Answer 6

Git takes the changes that were made in commit and does the exact opposite of them, and then makes a commit to reflect this change

If a character is added in commit A, then Git will make a new commit where that character is deleted. It also works the other way where if a character/line is removed, then reverting that commit will add that content back!

Question 7

reset vs revert

Answer 7

Reverting creates a new commit that reverts or undos a previous commit. So you have all the commits on the branch: both initial one and the reverted one

Resetting, on the other hand, erases commits, so you can’t undo this

Question 8

I’ve reset a commit. is there a way back?

Answer 8

yes, for about 30 days. git reflog gives you access to the deleted content

Question 9

relative referencing of commits

Answer 9

Question 10

what can git reset commits_reference do?

Answer 10